configs: ls1046a: Move SPI_FLASH_SPANSION to defconfig

Enable CONFIG_SPI_FLASH_SPANSION in defconfigs of LS1046ARDB and
LS1046AQDS which have two spansion flases i.e s25fs512s each of size
64M.

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
10 files changed